Study of the optimization of gold ore concentration using gravity separator (shaking table): case study for LS epithermal gold deposit in Artisanal Small scale Gold Mining (ASGM) Paningkaban, Banyumas, Central Java

[摘要] Aiming to increase the concentration of gold ore from LS epithermal gold deposit Paningkaban, Banyumas, Central Java related to its characteristic, shaking table has been applied in the development of non-amalgamation technique for artisanal miners. Many parameters affect the results of processing the gold concentration using a shaking table. The parameters studied in this research are gold grain size fraction, water flow rate, and shaking table speed. With an objective to determine the optimum condition, this study was designed using statistical approach Response Surface Method (RSM) at which all of the variables were varied altogether. The research method is to process the gold using shaking table with three levels approach, so that in total there were 27 concentrates to analyze using Fire Assay (FA) and further assessed using RSM to distinguish the interaction among parameters and the optimum condition. For the gold ore deposit from Artisanal Small scale Gold Mining (ASGM) in Paningkaban, Banyumas, Central Java with the formation of low sulfidation epithermal, the results showed that the highest gold was 3688 ppm with operating conditions ie gold grain size fraction of -100 + 200 mesh (-149 + 74 micron), water flow rate of 18 l / min and shaking speed of 100 rpm. From the RSM assessment it was obtained that optimum operating conditions is on gold grain size of -100+ 200 mesh (87,2576 micron), water flow rate of 9 l / min and shaking speed of 100 rpm. Thus, shaking table could be an alternative non-amalgamation technique to process LS epithermal gold ore in Paningkaban creating a sustainable ASGM.

[发布机构] Department of Geological Engineering, Universitas Gadjah Mada (UGM), Jl. Grafika No.2 Sleman, Yogyakarta, Indonesia^1;Department of Mining Engineering, UPN Veteran Yogyakarta, Jl. SWK 104 (Lingkar Utara) Condong Catur, Sleman, Yogyakarta, Indonesia^2;Department of Chemical Engineering, Universitas Gadjah Mada (UGM), Jl. Grafika No.2 Sleman, Yogyakarta, Indonesia^3

[效力级别] 矿业工程

[关键词] Epithermal gold deposits;Gold concentration;Operating condition;Optimum conditions;Optimum operating conditions;research methods;Response surface method;Statistical approach